Simulation of NO Formation in Hydrogen-Air Counterflow Diffusion Flame

Abstract:

The combustion of hydrocarbon fuels produces large amounts of carbon dioxide. In order to cope with the challenge of greenhouse effect and global environmental protection. H2, as a cleaner and more energy-burning fuel, is being considered in many of the practical applications of combustion equipments. However, H2 fuel combustion will still produce pollutant NOx. Thus, the study of NOx emission is one of the most important topics in H2 combustion. With the classical counterflow burner, a numerical simulation of NO emission was carried out on the H2 diffusion flames. The stretch effects on flame temperature, NO concentration, and EINO are analyzed; the contribution of different NO generation routs are also quantified and analyzed. The major parameters influencing NO emission are flame temperature, radical concentration, and residence time, the observed relationship between stretch rate and NO emission is explained with the three major parameters.

• Periodical: Applied Mechanics and Materials (Volumes 284-287)
• Pages: 937-943
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.284-287.937
• Online since: January 2013
• Authors: Yan Peng Wang, Pei Yong Wang
• Keywords: Counterflow Diffusion Flames, Hydrogen Diffusion Flame, NO Emission Index, Stretch Effect

References

[1] P. Wang, S. Hu and R.W. Pitz, Proc: Proceedings of the Combustion Institute (2007).

[2] Q. Li, P. Wang, F. Xing and J. Zou: submitted to Journal of Engineering Thermophysics (2011).

[3] G.J. Rortveit, J.E. Hustad, S.C. Li and F. A Williams: submitted to Journal of Combustion and Flames (2002).

[4] D. Giles, S. Som and S. Aggarwal: submitted to Journal of Fuel (2006).

[5] A.E. Lutz, R.J. Kee, J.F. Grcar and F.M. Rupley, OPPDIF: A Fortran Program for Computing Opposed-flow Diffusion Flames, Sandia National Laboratories Report SAND96-8243 (1997).

DOI: 10.2172/568983

[6] R.J. Kee, F.M. Rupley and J.A. Miller, Chemkin: A Fortran chemical kinetics package for the analysis of gas phase chemical kinetics. Sandia National Laboratories Report (1989).

DOI: 10.2172/5681118

[7] K. Seshadri and F.A. Williams: submitted to Journal of Heat and Mass Transfer (1978).

[8] Information on http: /mae. ucsd. edu/combustion/cermech.

[9] Z. Cheng, J.A. Wehrmeyer and R.W. Pitz: submitted to Journal of Combustion Science technology (2006).

[10] S. R Turns: Progress in energy and combustion science (1995).

[11] S. Naha and S.K. Aggarwal: submitted to Journal of Combust Flame (2004).

[12] T. Takeno and M. Nishioka: submitted to Journal of Combust Flame (1993).